Reservoir ink pad



Sept. 26, 1950 s. N. ROSENTHAL RESERVOIR INK PAD Filed April 1, 1948INVEN TOR. M- W m, a w

- g 1 2. This application relates to marking apparatus Fig. 2 shows apen forming part of the apand particularly to marking apparatus usefulinparatus. frequently or useful with a variety of colors of Fig. 1 showsan ink container or bottle I i) of Patented Sept. 26, 1950 a 2,523,879

UNITED STATES PATENT OFFICE v, 2.553 379 I r RESERVOIR IN PAD SidneyNorman Itosenthal', New ,York, Y., ass iigor to Speedry P roducts,Inc.,'New York,

Application April 1, 1M8, Serial No. 18,466

1 Claim. (c1. 91--54.5)

ink. rather large cross-section area, having a reduced Marking pens arenow known. One such, neck H in which is located a felt pad 52 havingshown in my Patent No. 2,416,596 of February 25, therein a fine bore 14.Within the bottle is a 1947, has a barrel in whose end is removably feltstem or rod having ends I5 and I3, and surmounted a holder having a feltnib. The barrel rounded for most of its length with a rigid sleevecontains a felt pack or filler saturated with ink or tube ll, perforatedat r8 asshown, such tube which passes through the felt pack and to the 5:9 being of any suitable material such as hardened nib for markingpurposes. plastic. Also within the bottle is a supply of ink If such apen be used infrequently, the ink whose level is shown at 2|].

supply within the barrel dries out and is thus lost The lower end I6 iswithin the supply of ink.

for use. Consequently, infrequent users find it within the bottle. Theuppe end l5 projects impractical as well as expensive to use such abovethe ink level onto an air space 2| and marking pens. Each time they wishto use such engages the pad l2. The pad in turn is tightly a pen, theyfind it dried out and it becomes necfitted into the neck l l of thebottle to act as a essary to fill the pen and saturate the felt packstopper, and cooperates with the stem not only to each time of use yetvery little of the ink placed hold the stem in place in the bottle, butalso to in the pen is ultimately used for marking pur- 20 maintaincontact between the pad and the stem.

poses, and most of it disappears by evaporation. The stem in turn,rigidified by the sleeve ll, acts A principal object of the presentinvention is to prevent the pad I2 from being driven down to provide amarking apparatus for infrequent into the bottle when the ink bottle isused as will users of marking pens useful without excessive now bedescribed.

expense or annoyance. Fig. 2 shows an inexpensive form of marking Usersof marking pens who wish to mark with pen of the non-fillable type. Itincludes a holder various colors find it necessaryat present to have 26and a felt nib 2'! removably secured in any as many marking pens ascolors they wish to use. suitable manner in the holder, as by beingfric- Since each marking pen is a precision made detionally fitted intothe holder. It will be undervice and includes a rather complexarrangement 0 stood that this pen is not intended to be filled of partsnecessary for satisfactory performance, ;with ink and, consequently, maybe made as ineach pen is relatively expensive and a supply of expensiveas possible, since it is merely a holder such pens for the variety ofcolors desired is out for a'nib. When it is to be used for marking purofthe range of some ordinary purchasers. This poses, the nib is pressedfirmly against the upper condition is aggravated particularly where the5 surface of the pad 12 as shown in Fig. 1 so thatv frequency of use ofany one of several colors is not the already and permanently saturatedpad I2 great. It is alsoaggravated by wasting of ink, will feed the nib21 with ink. A considerable due to color changeover or evaporation ofink amount of ink Will be picked up y e ni from a pen. Such users haveencountered so ough or m t ma s qu t se s.

many practical annoyances and difficulties 40 but not SO much as 0 bewasteful of The mentioned above that they do not make as muchfacilitvwith Which the nib y be loaded with use of marking apparatus asthey might; ink from the pad l2 encourages the use of the It is anancillary object of the present inven- D 0f 2 even by eq users, and evention, therefore, to provide marking apparatus es if p a ed 10ad 01' pp aneeded, no pecially useful for those who wish to mark with annoyanceisfelt Since loading dipp s so numerous colors without requiring any largeineasy. vestment on the part of such users in the form Th p b of fi inthe System he e of numerous pens. Such marking apparatus enshown issolved very satisfactorily. The upper courages the use of numerouscolors for marking end IE or the stem .is within an air space and andalso encourages infrequent users to use the lower surface of the pad isexposed except at marking pens. the minimum contact point where theupper end An embodiment of the invention is disclosed 15 f he s em esthe p The fine bore in the appended drawing. In this drawing, M providesfor air flow between the air space 2| Fig. 1 shows a marking apparatusin cross-secand the upper or exposed surface of the pad #2 tional view.

which is engaged by the nib Z1.

The pad 12 acts as a stopper fo the bottle l and thus prevents spilling.The fine bore I4 does not permit free flow of ink through the pad I2even though the bottle be tipped.

It will be observed that the reduced neck I I defines a cross-sectionalarea for the pad I2 and an exposed surface for that pad which is verysmall. In actual practice the pad I2 is one-half inch diameter.Consequently, there is very little exposed area for ink to be lost byevaporation, it being understood that ink loss is proportional to theamount of exposed area.

Any suitable cap, as cap 28, may be employed to cover neck I l of thebottle when the marking apparatus hereof is not in use. The cap may beremoved from the bottle to expose the pad l2 which at all times issaturated with ink because of the presence of the stem whose lowe end isWithin the ink.

Since the holder 26 and nib 21 are inexpensive, it is practical toassemble a large number of ink bottles and a large number of holders 26with nibs 21 in a set and thus provide an opportunity for a variety ofcolors to be readily available for easy and practical use even byinfrequent users. The investment is not substantially greater than wouldbe required for the required number of ink colors and the bottles inwhich such ink is commonly shipped. There would not be required anylarge number of expensive pens.

If desired, instead of there being as many holders 26 as there are nibs21 and as there are bottles ID,- in a multiple color set, it ispractical to employ but one holder '26 with a number of readilyreplaceable nibs 21. A nib for each color may be inserted into theholder when it is desired to change colors.

It is important to note that the sleeve l1 serves to rigidify the stemand prevent its collapse and thus impai its function to transfer inkfrom the bottle ID to the pad l2. It is also important to note that thecontact between the stem and the pad is reduced to a minimum because ofthe angularity of the stem within the bottle.

Now having described the marking apparatus herein disclosed, referenceis had to the claim which follows:

An ink pad comprising an ink supply means comprising an ink containerhaving an open end, a felt pad in and closing said open end, and a feltstem separate from and of lesser diameter than said pad and engaging atits opposite ends the pad and the bottom of the containe and the sidesof the container and thus held firmly in place therein, said felt stembeing reinforced for rigidity by reinforcing means therefor to serve asa strut to prevent the pad from being pushed down into the containerwhen pressure is applied to the pad, the pad having a fine boretherethrough whose lower end is clear of said stem.

SIDNEY NORMAN ROSENTHAL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,129,897 Owen, Jr Mar. 2, 19152,383,960 Dupuy Sept. 4, 1945 FOREIGN PATENTS Number Country Date198,179 Switzerland Sept. 1, 1938

